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Vulnerability record · CVE-2021-4216 · published 26 August 2022

CVE-2021-4216: Artifex mupdf divide by zero vulnerability

Artifex · Mupdf

A Floating point exception (division-by-zero) flaw was found in Mupdf for zero width pages in muraster.c. It is fixed in Mupdf-1.20.0-rc1 upstream.

5.5 CVSS 3.1 Medium EPSS 0.24% · top 85.8% CWE-369 · Divide by zero
5.5CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A Floating point exception (division-by-zero) flaw was found in Mupdf for zero width pages in muraster.c. It is fixed in Mupdf-1.20.0-rc1 upstream.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugs.ghostscript.com/show_bug.cgi?id=704834 Permissions Required
https://github.com/ArtifexSoftware/mupdf/commit/22c47acbd52949421f8c7cb46ea1556827d0fcbf PatchThird Party Advisory
https://bugs.ghostscript.com/show_bug.cgi?id=704834 Permissions Required
https://github.com/ArtifexSoftware/mupdf/commit/22c47acbd52949421f8c7cb46ea1556827d0fcbf PatchThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-4216), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.